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(No Model.) 3 Sheets-Sheet 1. L. J. KNOWLES, Decd. F. B. KNOWLES and H.A. MARSH, Surviving Executors.

WEPT STOP MOTIONPOR LOOMS. No. 321,226. PatentedJ une 30, 1885.

Witnesses Inventor:

N4 PETERS PhOiO-l-Rhognphnr, Washington D. G

(No Model.) 3 Sheets-Sheet. 2. L. J. KNOWLES, Decd.

F. B. KNOWLES and H. A. MARSH, Surviving Executors. WEFT STOP MOTION FORLOOMS.

No. 321,226. Patehted June 30, 1886.

Witnesses: L I}'wentor:

7 W, lfi z W4 (No Model.)

' 3 SheetsSheet 3. L. J. KNOWLES, Decd.

F. B. KNOWLES and H. AL MARSH, Surviving Executors.

WEFT STOP MOTION FOR LOOMS.

Patented June 30, 1885.

Invenior:

N. PETERS. Photo-Lithograph". wwunmn. 0.1;

UNITED STATES PA ENT rrice.

LUOIUS J KNOVLES, OF WORCESTER, MASSACHUSETTS; FRANCIS B. KNOWVLES ANDHENRY A. MARSH SURVIVING EXEOUTORS OF SAID L. J. KNOWLES, DECEASED.

WEFT STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No, 321,226, dated June 30,1885.

Application filed December 2, 1880. (No model.)

To all whom, itmay concern:

jecting from the loom-frame, a pin, h, upon.

Be it known that I, LUOIUS J. KNOWLES, of \Vorcester, in the State ofMassachusetts, have invented an Improvement in \Veft Stop- Motions forLooms, of which the following is a specification.

The invention consists in the combination, in a weft stopmotion, of adagger and fingers so connected that the movements of the one dependupon the movements of the other, with. a rocking shoe operating to guidethe dagger or receive and communicate its thrust to the belt-shiftingmechanism, as hereinafter set forth.

The invention consists, further, in certain details of constructionhereinafter claimed.

In the drawings,l have shown only so much of the frame and mechanism ofa loom as is necessary to illustrate the said invention and its mode ofoperation; and of these parts Figure 1 is a side elevation, the laybeing in its extreme rear position. Fig. 2 is aplan, the lay still inits extreme rear position, and the weft-thread having been thrown. Fig.3 is a sectional elevation on line a: a: of Fig. 2, the lay, however,having been brought some distance forward. Fig. 4 is a partial frontview of the lay including that portion of the weftstop mechanismattached thereto.

A is theloom-frame. Bis the breast-beam.

O is the shipper-rod passing loosely through holes in projections a aupon a supportingplate which rocks upon a pivit, b, in the end of anarm, E, projecting from the loom-frame.

F is a spiral spring upon shipper-rod 0, between a projection, a, and afixed sleeve, 0, on said rod, as shown.

G is the shipper-lever, secured by a set screw, 6, to a projecting endof a rock-shaft, H, extending across the loom and having hearings in theends of the loom-frame. The shipper-lever is connected with theshipperrod by a lever, I, which is hinged to the shipper-rod at f, androcks upon a stud, 9, prothe end of the shipper-lever working in alocking-slot, i, in the upper end of the lever I A stop, j, limits thebackward movement of theshippinglever.

an elbow-arm, m, the horizontal portion of which is in contact with theupper edge of the finger J, the said finger being of such shape 4 that aslight rocking forward of the elbow-arm pushes it down, thus rocking theshaft H and operating the belt-shipping mechanism. The rocking motion ofthe shoe K is limited by a notch, a, in its lower edge,into whichextends a projection, 0, from the arm L, and its center of gravity,including the elbow-arm, is such as to tend to lift the elbow-arm fromthe finger J and throw the shoe back as far as the slot n and projection0 will permit.-

The shoe K has a stop, p, to receive the thrust of the dagger, while itsrear portion projects upward and is cam-shaped to guide the dagger, aswill hereinafter appear.

S is the lay having a reciprocating motion by means of the crank-wheel Mand connecting-rod N.

P is the dagger made in two parts, one part held in a socket in theother by means of a set-screw, 3/. The dagger is pivoted at v to abracket, a, beneath the lay, and is connected by a connecting-rod, w,with the crank-pin of a small crank-shaft, s, which has bearings, asshown, in a bracket, t, upon the front of the lay. This crank-shaft scarries the feelers c, secured thereto by a hub, c, and set-screw t. Thefeelers are opposite the slot 0' and fall into the slot to automaticallystop the loom.

The operation is as follows: The lay being at its rear position in theloom, the forward end of the dagger rests upon the highest part of theshoe K, and the feelers 6 stand up, but the center of gravity of thedagger is such that upon the forward motion of the lay its forward endfollows down the steep incline of the shoe K and lowers the fingers.weft-thread has been properly stretched across the slot 9, the feelersstriking it rest upon it and hold the dagger up so that it clears thestop p in its continued forward motion, and when the lay again goes backin the loom the If the p forward end of the daggerniding up the steep iIt is also obvious that the dagger and fluincline of the shoe, raisesthe feelers to their nearly upright position; but if, in the forwardmotion of the lay, the weft-thread has not been properly thrown, thefeelers in their downward movement will fall into the slot 0" and permitthe forward end of the dagger to strike the stop thereby rocking theshoe K forward, and operating the belt-shipping mechanism, as beforestated.

The dagger has a slot, 12 in its upper edge, one side or the other ofwhich strikes against the bracket u'to resist the thrust of the daggeror limit the forward throw of the feelers.

The belt-shipping mechanism herein described as automatically operatedby my said improved stop-motion is substantially the belt shippingmechanism patented to me in Patent No. 197,641. Itis obvious, however,that my said improved stop-motion might be automatically employed inconnection with other beltshipping devices without departing from mypresent invention.

gers, connected as above described, and the rock-shoe working therewith,may be respectively attached to the lay and breast-beam of any ordinaryloom, in the manner described.

I claim- 1. The lay S, feelers e, dagger P, crankshaft 8, andconnecting-rod w, in combination with the breast-beam B, rock-shoe K,finger J, shaft H, and a belt-shifting mechanism, substantially asdescribed.

2. The dagger P, adapted to be attached on the under side of the lay,the connecting-rod w, the shaft 8, and the feelers e, in combinationwith the bracket t, adapted to be attached to the lay, and the cam orshoe K, adapted to be attached to the breast-beam, substantially asdescribed.

LUCIUS J. KNOW/LES.

itnesses:

W. W. SWAN, H. G. OLMSTED.

